Communication in wireless communication network

Abstract

Provided is a method of jitter monitoring for time sensitive communication (TSC) in a wireless communication network. The method of jitter monitoring may include: receiving, by a user plane function (UPF), a delay and jitter measurement request from an application function (AF); measuring, by the UPF, a delay and a jitter in response to the delay and jitter measurement request; and transmitting, by the UPF, the measured delay and jitter to the AF.

What is claimed is: 
     
         1 . A method of jitter monitoring for time sensitive communication in a wireless communication network, the method comprising:
 receiving, by a user plane function (UPF), a delay and jitter measurement request from an application function (AF);   measuring, by the UPF, a delay and a jitter in response to the delay and jitter measurement request; and   transmitting, by the UPF, the measured delay and jitter to the AF,   wherein the delay is determined based on a difference between a time when the UPF transmits data and a time at which a user equipment (UE) receives the data,   wherein the jitter is determined based on at least one of a maximum difference between a measured delay value and a mean delay value in a set of delay measurements, and a variance value of the set of delay measurements,   wherein the UPF is configured for Quality of Service (QOS) monitoring including measuring of the delay and the jitter, and for reporting based on a reporting frequency;   wherein the reporting frequency is configurable for event-triggered reporting, such that if the measured jitter exceeds a predetermined jitter threshold value, the UPF reports the measured jitter to the AF based on the event-triggered reporting; and   wherein the reporting frequency is also configurable for periodic reporting based on a predetermined measurement period.   
     
     
         2 . The method of  claim 1 , wherein:
 the delay and jitter measurement request is generated at a time of establishment or modification of an AF session, and   the receiving of the delay and jitter measurement request from the AF by the UPF includes receiving, by the UPF, the delay and jitter measurement request from the AF through at least one of a network exposure function (NEF), a policy control function (PCF), and a session management function (SMF).   
     
     
         3 . The method of  claim 2 , wherein:
 the delay and jitter measurement request is generated by event subscription for the AF session, and   the receiving of the delay and jitter measurement request from the AF by the UPF includes receiving, by the UPF, the delay and jitter measurement request from the AF through at least one of the NEF, unified data management (UDM), and the SMF.   
     
     
         4 . The method of  claim 2 , wherein:
 the transmitting of the measured delay and jitter to the AF by the UPF includes transmitting, by the UPF, the measured delay and jitter to the AF through at least one of the SMF and the NEF.   
     
     
         5 . The method of  claim 1 , wherein:
 the measuring of the delay and the jitter by the UPF includes at least one of measuring the delay and the jitter based on a difference between a time when the UPF transmits data and a time when a user equipment (UE) receives the data, and   measuring the delay and the jitter based on a difference between a time when the UE transmits the data and a time when the UPF receives the data.   
     
     
         6 . Apparatus for jitter monitoring for time sensitive communication in a wireless communication network, the apparatus comprising:
 a memory; and   a processor operably connected to the memory;   wherein the processor is configured to:   receive, by a user plane function (UPF), a delay and jitter measurement request from an application function (AF);   measure, by the UPF, a delay and a jitter in response to the delay and jitter measurement request; and   transmit, by the UPF, the measured delay and jitter to the AF,   wherein the delay is determined based on a difference between a time when the UPF transmits data and a time at which a user equipment (UE) receives the data,   wherein the jitter is determined based on at least one of a maximum difference between a measured delay value and a mean delay value in a set of delay measurements, and a variance value of the set of delay measurements,   wherein the UPF is configured for Quality of Service (QOS) monitoring including measuring of the delay and the jitter, and for reporting based on a reporting frequency;   wherein the reporting frequency is configurable for event-triggered reporting, such that if the measured jitter exceeds a predetermined jitter threshold value, the UPF reports the measured jitter to the AF based on the event-triggered reporting; and   wherein the reporting frequency is also configurable for periodic reporting based on a predetermined measurement period.   
     
     
         7 . The apparatus of  claim 6 ,
 wherein the delay and jitter measurement request is generated at a time of establishment or modification of an AF session, and   wherein the processor is configured to, in order to receive the delay and jitter measurement request from the AF by the UPF, receive, by the UPF, the delay and jitter measurement request from the AF through at least one of a network exposure function (NEF), a policy control function (PCF), and a session management function (SMF).   
     
     
         8 . The apparatus of  claim 7 , wherein the delay and jitter measurement request is generated by event subscription for the AF session, and
 wherein the processor is configured to, in order to receive the delay and jitter measurement request from the AF by the UPF, receive, by the UPF, the delay and jitter measurement request from the AF through at least one of the NEF, unified data management (UDM), and the SMF.   
     
     
         9 . The apparatus of  claim 7 , wherein the processor is configured to, in order to transmit the measured delay and jitter to the AF by the UPF, transmit, by the UPF, the measured delay and jitter to the AF through at least one of the SMF and the NEF. 
     
     
         10 . The apparatus of  claim 6 , wherein the measuring of the delay and the jitter by the UPF includes at least one of measuring the delay and the jitter based on a difference between a time when the UPF transmits data and a time when a user equipment (UE) receives the data, and
 wherein the processor is configured to measure the delay and the jitter based on a difference between a time when the UE transmits the data and a time when the UPF receives the data.